Square Hip Roof Framing

With a square roof the ridge becomes a square center piece kingpost with side lengths equal to common rafter thickness.

Square hip roof framing.

The standard two foot framing square also referred to as a carpenter s square and historically as a steel square is an l shaped tool that is used to mark angles for cuts used in building framing particularly roof rafters stair stringers and many other cuts or angles other than 90. Hip backing angle 15 4. The depth of the seat cut should be equal to the thickness of the wall you re installing the rafter on. Hip roofs can be designed over square shaped buildings as well as on rectangular ones.

The green arrows above show every side is equal we ll assume 2 metres for. Purlin lip cut angle 11 4. Outside top plate edge to ridge top edge common 10 11 3 4. Hip roofs essentially lack gables or vertical sides.

The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters. The hip end jacks tab displays a dimensioned side view and top view of the hip roof jack rafters for the hip end side of the hip rafter on an irregular hip roof. Http amzn to 2sfscbz swanson speed square http amzn to 2svgnvt 16 x 24 framing square starrett http amzn to 2sflm5v milwaukee circular saw http amzn. The design of hip roofs can follow triangular sides as well as a combination of triangular and trapezoidal sides.

Hip roof framing center join diagram with options for square roof 1. Span for the main rafters measure from outside of wall to outside of wall. If the wall plates are all square of equal lengths then the hipped rafters would form a pyramid shape like the picture above normally a roof is rectangle and there are more yellow common rafters. Just like the name suggests a pyramid roof takes the shape of a pyramid and it is constructed on top of a square or a rectangular base.

Use the framing square to find where the jack rafter s plumb cuts will connect to the hip. The hips are in red common rafters yellow and for hips to work on a square roof like above each member is equal. Hip rafters are the diagonal rafters that span from the ridge at the top down to the corners of the roof. A pyramid roof is one of the many variations of hip roofs.

When you have the length of the jack rafters use a round saw to cut the seat and shoulder cuts. Select the following information by using the drop downs to enter values in feet and inches.